move_convert12.fail.cpp revision c52f43e72dfcea03037729649da84c23b3beb04a 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <memory>
11
12// unique_ptr
13
14// Test unique_ptr converting move ctor
15
16#include <memory>
17#include <cassert>
18
19// test converting move ctor.  Should only require a MoveConstructible deleter, or if
20//    deleter is a reference, not even that.
21// Explicit version
22
23struct A
24{
25    static int count;
26    A() {++count;}
27    A(const A&) {++count;}
28    virtual ~A() {--count;}
29};
30
31int A::count = 0;
32
33struct B
34    : public A
35{
36    static int count;
37    B() {++count;}
38    B(const B&) {++count;}
39    virtual ~B() {--count;}
40};
41
42int B::count = 0;
43
44template <class T>
45class CDeleter
46{
47    int state_;
48
49    CDeleter(CDeleter&);
50    CDeleter& operator=(CDeleter&);
51public:
52
53    CDeleter() : state_(5) {}
54
55    int state() const {return state_;}
56    void set_state(int s) {state_ = s;}
57
58    void operator()(T* p) {delete p;}
59};
60
61int main()
62{
63    {
64    CDeleter<A> d;
65    const std::unique_ptr<B, CDeleter<A>&> s(new B, d);
66    A* p = s.get();
67    std::unique_ptr<A, CDeleter<A>&> s2 = s;
68    assert(s2.get() == p);
69    assert(s.get() == 0);
70    assert(A::count == 1);
71    assert(B::count == 1);
72    d.set_state(6);
73    assert(s2.get_deleter().state() == d.state());
74    assert(s.get_deleter().state() ==  d.state());
75    }
76    assert(A::count == 0);
77    assert(B::count == 0);
78}
79